EarthNeptuneJupiterV0391 Peg b

0.01 AU0.1110100 AU MercuryEarthJupiterNeptune V0391 Peg b · 1.72 AU

Diagram, not a photograph. Sizes to scale; distance from the star on a logarithmic scale, worked out from the orbital period and the star’s mass. The planet’s colour shows its equilibrium temperature (warm), not its real colour. Source: NASA Exoplanet Archive.

Confirmed exoplanet · Database record + computed analysis

V0391 Peg b

A confirmed world orbiting V0391 Peg, 3,900.8 light-years away.

3,900.8 light-years (1,196.0 pc) Discovered 2007 · Pulsation Timing Variations

A gas giant

13.10 Earth radii, Jupiter-class (Jupiter is 11.2).

The orbit

Its year takes 1,170 Earth days (3.2 Earth years).

Temperature and starlight

Its equilibrium temperature (the airless-world estimate) is about 247 °C. Above water's boiling point. It receives 9.4 times the starlight Earth gets.

Its sun

Its star is hotter than the Sun (29,300 K, sdBV), burning brighter and faster.

How far is that, really?

At 3,901 light-years, tonight's light from this system left it around the year -1874. A Voyager-speed probe would need roughly 69,014,645 years to get there.

Everything above is computed from the archive’s measured values for this planet. Where a quantity is missing, the statement is omitted rather than guessed.

About this record

The measured values come from the NASA Exoplanet Archive, and any missing value has not been determined yet; the Atlas never fills gaps with guesses. More standout worlds: Proxima b, TRAPPIST-1e, K2-18 b, 55 Cancri e, and the detection methods that found them all.